Mechanism for removing waste yarn from bobbins.



No. 761,976. PATENTBD JUNE "7, 1904.

v A. MAKBPEAGE. MEGHANISM FOR REMOVINGWASTE YARN FROM BOBBINS.

APPLICATION FILED DEC.1B,1903.

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UNITED STATES Patented June '7, 1904.

PATENT OFFICE.

MECHANISQMFOR REMOVING WASTE YARN Faolvl BOBBINS.

SPECIFICATION forming part of Letters Patent No. 761,976, dated June '7, 1904. Application filed December 18, 1903. Serial No. 185,669- (No model.)

To all whom, it may concern.-

Be it known that I, ALEXANDER MAKEPEAOE, a citizen of the United States, residing at Fall River, in the'oounty of Bristol and State of Massachusetts, have invented certain new and useful Mechanism to Remove Waste Yarn or Roving from Bobbins, of which the following is a specification.

My invention relates to mechanism for removing waste yarn or roving from bobbins, and has for its object thesubstitution of mechanical means for the manual operation known as stripping bobbins. The advantages of this substitution will be made apparent hereinafter.

Upon the removal of a bobbin from its shuttle more or less waste yarn remains upon the spindle portion near the head thereof. To strip this waste from the spindle, a boy with his hand grips the waste and spindle and drives the nose of the bobbin one or more times against some unyielding body,the hand, with its waste',moving toward thenose of the bobbin. When sufficiently loosened, the waste in one hand. and the bobbin in the other are separated and then thrown into suitable receptacles therefor; but serious objections arise from this method of stripping. 'Thousands and thousands of bobbins soon have their lines destroyed by this pounding. Their noses be ing wooden, the exposed ends of the fibers become slivered and rough,andthe yarnwhen running ofi over such rough and slivered noses, especially in spinning-frames, catches thereon and breaks. When in this condition, the noses must be repaired by having their ends turned down smooth; but this operation reduces the length of each bobbin. Further, this method of stripping works injury to the operatives hands. The pounding causes the waste to irritate and inflame the palm of the; hand,wl 1ich often becomes painfully sore.- In some cases the above method cannot be used, to strip off the waste yarnJ; This is especially! true where the spindle of thebobbin is cylindrical instead of tapering. In such an event, the operative resorts-to a knife. He draws the point of the blade across the yarn-windings and repeats the operationin no careful manner until all are severed; but to accomand seriously affects the physical condition of the hands of the operative. Now the purpose of my invention is to overcome these objections by substituting for this manual operation of stripping mechanical means to remove the yarn without injuring the bobbin, and by so doing I accomplish a great saving in the item of labor, in the lives of the bobbins, and in the breakage of yarn.

My invention resides in mechanism that will receive a bobbin having waste yarn thereon, seize the yarn, push the bobbin away therefrom,'and leave the yarn behind, said mechanism being made up of jaws to move into and out of engagement with the waste yarn on the bobbin and a reciprocating apparatus to pushthe bobbin through and away from the closed jaws, the waste yarn remaining at the jaws. I

Figure 1 is a perspective view of myinvention, the parts being in position to begin removing waste from the bobbin. .Fig. 2 shows a side elevation, the bobbin being shown in dotted lines. Fig. 3 represents a front elevation. Fig. 4 is a top plan, the jaws being shown in position to grip the waste on a bobbin. Figs.l5 and 6 are sectional details of the jaws, Fig. 5 showing the relations of jaws and waste at the beginning and Fig. 6 at the end ofthe operation of removing waste from the bobbin; and Fig. 7 shows how the jaws may be modified in form to be adapted to a dif ferent type of bobbin. r

: In. the drawings illustrating the principle of'my invention and the best mode now known to me of embodying said principle a table X "supports the various gripping,- reciprocating,

Jaws a a are mounted and driving devices.

in ways a fixed to the table X, and have in each of their two adjacent ends a curved beveled face, which with the top surface of the jaw forms a thin curved edge a as in Figs. 4, 5, and 6. symmetrically. pivoted to the jaw a at a are two levers a a each of which is also pivoted to the ways at a. The jaw a in its outer end portion has secured therein a threaded yoke (i, which may be adjusted lengthwise of the jaw to change its relations thereto. A driving-lever a in a plane at right angles to the jaws a a is pivoted to the table, as at a", and near its upper end portion is pivotally secured within the yoke (6 adjustably secured to the jaw a. Links (0 a connect this portion of said driving-lever to the free arms of the levers a a. The lower end portion of said driving-lever a is in sliding engagement with a rocker-arm a provided with an antifriction-roller a and secured to arock-shaft a, loosely mounted on bearings on legs of the table X. A spring rockarm a, fixed to said rock-shaft, is in sliding engagement with a sector-shaped cam a, mounted on a cam-shaft 7) and to be more particularly described later. When said jaws a a are closed together, the axis of the opening formed by their curved adjacent edges e a is at right angles to the plane of the jaws. Below said jaws and coincident with said axis is that of a hollow cylindrical guide 0, whose upper end portion is secured to the under side of the table-top and rigidly held in position by braces c c, fastened to the table-legs w m. The diameter of this guide 0 is large enough to receive the spindle .2, with its waste 2, and to permit it to reciprocate freely. A push-rod c is retained within this guide and has its lower end provided with an antifriction-roller c. A circular cam 0*, fast on said cam-shaft Z), which shaft is in the plane of the axis of said guide 0, engages said antifriction-roller and pushes said push-rod c upward, the weight of the rod causing it to follow the cam c in its descent.

The length of the guide 0 and the rod 0 is such that when the push-rod is in its lowest position the head of the bobbin is just above the curved gripping edges of the jaws. (See Figs. 2 and 5.) If desirable, the top of the push-rod may have some soft material a, such as felt, fixed thereto to protect the nose of the bobbin when in contact with said push-rod.

Secured to the cam-shaft is a gear 7), that meshes with a driving-gear (Z on driving-shaft (Z, on which are fast and loose pulleys (Z (P.

The circular cam 0 gives the push-rod the desired upward movement, while the sectorlike cam e closes the jaws a a by engaging the spring rock-arm a, which is operativcly connected with said jaws a a through the camshaft 7), rocker-arm a driving-lever a yoke e links (0 (4 and levers a (1/ Said sectorlike cam is designed to operate through an angle of about sixty degrees during the period the circular cam 0*, and hence the pushrod 0 are in their lowest positions. (See Figs. 1, 2, 3, and 4:.) The jaws a a are thus kept closed for, say, one-third of the upward stroke of the push-rod 0. hen the sectorlike cam 64 ceases to operate said arms and said levers, a retractile spring m connected with said driving-lever (1., pulls it in an opposite direction, and thus opens the jaws (r a and holds them open until the circular cam r" and its push-rod e have reached their said lowest positions 1'. (2., the jaws are closed for about one-third of the upward stroke of the push-rod c and are open for the balance of said upward stroke and the entire downward stroke of said push-rod 0 A plate f, having a hole therethrough concentric with the cylindrical guide 1 and the curved edges (4 of the jaws (a (1 protects the operatives hands from being accidentally crushed between the reciprocating jaws.

The operation of my apparatus is as follows: Power being received through the fast pulley d it is transmitted through the gear-wheels (Z Z) to the cam-shaft 7) and thence through the circular cam c", which forces upward the pushrod 0 and then permits the latter by reason of its weight to follow the cam back to its original and lowest position, where and when the sector-like cam (1 begins to move the spring rock-arm a, rock-shaft m and rockarm a, which in turn forces outwardly the lower portion of the driving-lever a and the upper arm inwardly. This latter movement imparts, through the yoke (1/ a similar movement to the jaw (1/ and through the links M" and levers a an opposite movement to the other jaw (1 In short, the jaws (r (1/ become closed. After the sectorlike cam 11" has moved through an arc of about sixty degrees-- that is, after the push-rod a has moved up toward the curved edges ((Of thejaws for about one-third of its strokesaid sector-like cam ceases to hold the jaws closed, and the retractile spring (6 acting in a direction opposite to that of the cam 0', causes the jaws u a to open until the push-rod c returns to its low est position.

To remove the waste .2" from a bobbin the spindle of the latter is dropped into the guide 0 upon the cushioned top 0'' of the descending push-rod 0 hen the latter reaches its lowest position, (see Figs. 1, 2, and 3,) the jaws a a engage the top portion of the waste (see Figs. 1, 4:, and 5) and the push-rod w pushes the bobbin up through the opening formed by the curved edges 1/ 0! the jaws (r u, all the waste .2 remaining at said edges and the bobbin being completely divested of its waste yarn. (See Fig. 6.) The operative the moment the jaws open seizes the clean bobbin with one hand and the waste with the other and has ample time to remove them from the apparatus while the jaws are open. The same operation is rapidly repeated with succeeding bobbins.

To avoid breaking the machine and also to give some play to the jaws in case thediameter of the bobbin should vary from that of the kind being stripped, the rock-arm u" isa. spring. Should the thickest part of the bob- In fine, by employing the principle of my invention, which is illustrated by the above described machine, I can remove waste yarn from all kinds of bobbins without injuring them. I 1

It will be evident that the principle of my invention may be embodied in many forms without departing from the substance thereof. Desiring to protect my invention in the broadest manner legally possible, whatI claim l. A mechanism, comprising jaws, whereby waste yarn on a bobbin may be seized and released by said jaws; mechanism whereby said jaws are caused to seize and release said waste; mechanism whereby said bobbin is pushed through and away from said jaws; and driving mechanism cooperating with said jaw-operating and said pushing mechanisms, to open said jaws while the pushing mechanism is receding from said jaws, and to close said jaws when said pushing mechanism approaches sa1d aws.

2. A mechanism comprising jaws,-each of which has an edge adapted to engage waste yarn on a bobbin; ways in which sa1d aws are movably mounted; mechanism to move said jaws, and their adjacent gripping edges,

toward and away from each'other; mechanism whereby said bobbin is pushed between and away from said edges; and driving mechanism, cooperating with said jaw-operating and said pushing mechanisms, to open said jaws while the pushing mechanism is receding from said jaws, and to close said jaws when said pushing mechanism is approaching said jaws.

3. A mechanism comprising jaws, whereby waste yarn on a bobbin may be seized and released by said jaws; a system of levers and links, operatively connected with said jaws; a sector-like cam operating said system of levers and jaws; mechanism whereby said bobbin is pushed between andaway from said jaws; driving mechanism, cooperating with said sector-like cam and its connecting system of levers, and with said pushing mechanism, to open said jaws while said pushing mechanism is receding from said jaws, and to close said jaws when said pushing mechanism is approaching said jaws.

4:. A mechanism, comprising jaws, whereby waste yarn on a bobbin may be seized and released by said jaws; a system of levers and links, operatively. connected with said jaws; a cam-shaft; a sector-like cam, mounted on said shaft; a second cam mounted on said camshaft; a push-rod, operated by said second cam, to push the bobbin between and away from said jaws; a guide for said push-rod;

said sector-like cam, and said second cam operating the push-rod, beingso adjusted and secured to said cam-shaft, that the sector-like cam begins to operate when the push-rod and its cam begin to approach the jaws, and ceases to operate before they recede from said jaws; and driving mechanism to operate said camshaft.

5. 'A mechanism, comprising jaws, whereby waste yarn on a bobbin may be seized and released by said jaws; a system of levers and links operatively connected with said jaws; a sector-like cam operating to retract said sys- -tem of levers and jaws; a retractile spring operating said levers and jaws in an opposite direction; mechanism whereby said bobbin is pushed between and away from said jaws; drlving mechanism, combined w1th sa1d camoperatlng and sa1d pushing mechanisms to permit said spring to operate said system of levers to open said jaws while said pushing mechanism is receding from said jaws, and to close said jaws when said pushing mechanism is approaching said jaws.

6. A mechanism comprising jaws, whereby waste yarn on a bobbin may be seized and released by said jaws; mechanism, whereby said jaws seize and release said waste; and mechanism, whereby said bobbin is pushed between, and away from, said aws.

7. Amechamsm, comprising aws, whereby waste yarn on a bobbin may be seized and re- 1 leased by said jaws; mechanism whereby said jaws are caused to seize and release said waste;

mechanism whereby said bobbin is pushed through and away from said jaws; and driving mechanism, cooperating with said jaw-opcrating and said pushing mechanisms to open said jaws while the pushing mechanism is receding from said jaws, and to close said jaws when saidpushing mechanism approaches said jaws; said jaw-operating mechanism, contain- IIO ing a resilient member therein, to prevent breakage of said mechanism.

In testimony whereofI affix my slgnature in presence of two wltnesses.

ALEXANDER MAKEPEAOE.

. vWitnesses:

RIGHARD'P. BORDEN, JAMES H. KENYoN, Jr. 

